Pediatrics A child with complaints of cough. Characteristic inspiratory whoop. Sample for investigation is ________ A Nasopharyngeal swab B Tracheal aspiration C Cough plate culture D Sputum culture 💡 Explanation A child with complaints of cough. Characteristic inspiratory whoop. Sample for investigation is ________ ✓ Correct Answer: A. Nasopharyngeal swab